Filter cartridge



FIG. 1 is a top perspective view of a filter cartridge showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a bottom perspective view thereof.

The dot-clash broken line defines the bounds of the claimed design and form no part thereof. The dashed broken line showing of filter cartridge is for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a filter cartridge, as shown and described. 